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                <h1 class="post-title" itemprop="name headline"> BootStrap4提取并编译Flexbox Grid系统 </h1>
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                <h2 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h2>
                <p>首先Flexbox是什么？它是Bootstrap4新出的一个布局格式，对移动端开发非常方便。 说一下我为什么要提取Flexbox。有需求才有动力，首先是需求，最近在开发一个移动端适配的网站，使用了materi-ui框架，基于React。使用materi-ui时，已经内置了许多样式，但是bootstrap的一些多余样式会影响一些现有样式，而那些样式对我又没啥用。另外Flex对于移动端布局开发非常适合，这次正好也拿来练练手。 移动端开发是趋势，随着移动端的发展，BootStrap也出了新版本4，不过现在还是alpha版本，还没正式推出。 其中一个比较大的改进便是Flexbox Grid系统。 BootStrap原本最常用的布局栅格化系统在做响应式开发的时候比较方便，但是只针对于移动端开发的时候并没有多大用处了，流行的Flex布局应用越来越广泛。 在Founation中，看到过有了这种Flex布局，它就是适应手机开发的框架。后来Bootstrap4也增加了这块。 那么Flexbox Grid系统相比之前什么改进呢？请看官方文档实例。 <a href="http://v4-alpha.getbootstrap.com/layout/flexbox-grid/" target="_blank" rel="noopener">Flexbox Grid</a> P.S 别去上什么中文网，全是错误，实例结果有问题。不想吐槽，一开始我还以为是Flexbox Grid设计不科学。</p>
                <h2 id="准备工作"><a href="#准备工作" class="headerlink" title="准备工作"></a>准备工作</h2>
                <p>首先下载BootStrap V4。 <a href="https://v4-alpha.getbootstrap.com" target="_blank" rel="noopener">Bootstrap V4</a> 目前最新版还是alpha版本，如链接失效，请移步官网。 <a href="http://getbootstrap.com" target="_blank" rel="noopener">BootStrap</a> 然后你需要安装了node，gulp，自行下载即可。 <a href="http://www.gulpjs.com.cn/" target="_blank" rel="noopener">gulp</a></p>
                <h2 id="开始抽取"><a href="#开始抽取" class="headerlink" title="开始抽取"></a>开始抽取</h2>
                <p>下载之后打开Bootstrap源代码文件夹，找到scss目录，可以看到如下的结构。 <a href="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-0@2x.png" target="_blank" rel="noopener"><img src="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-0@2x-511x1024.png" alt="QQ20161029-0@2x"></a> mixins是一些可调用的组件，本身编译不会产生任何结果。utilities是一些公用的包，比如我们要抽取的Flex就在这里面。 外面的这么多是一些公用的基本组件。 通过官方文档可以发现：</p>
                <blockquote>
                  <p>If you’re familiar with modifying variables in Sass—or any other CSS preprocessor—you’ll be right at home to move into flexbox mode.</p>
                  <ol>
                    <li>Open the <code>_variables.scss</code> file and find the <code>$enable-flex</code> variable.</li>
                    <li>Change it from <code>false</code> to <code>true</code>.</li>
                    <li>Recompile, and done!</li>
                  </ol>
                  <p>Alternatively, if you don’t need the source Sass files, you may swap the default Bootstrap compiled CSS with the compiled flexbox variation. <a href="http://v4-alpha.getbootstrap.com/getting-started/download/" target="_blank" rel="noopener">Head to the download page</a> for more information.</p>
                </blockquote>
                <p>如果我们想要添加Flex组件，还需要将这个变量更改，即将$enable-flex改成true才可以，默认是false。 在源代码中我们可以发现已经有了一个bootstrap-flex.scss的文件，然而这里面发现直接引入了bootstrap的所有代码，这并不是我们想要的，它可能会复写一些基本样式，会影响我们的工程。我们想要的是单独把Flex部分抽离出来。 所以我们自己新建一个 bootstrap-flex.scss的空文件。 首先将变量改为true</p>
                <figure class="highlight shell">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="meta">$</span><span class="bash"><span class="built_in">enable</span>-flex: <span class="literal">true</span>;</span></span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>然后阅读源码可以发现有两个公用的scss文件是必须引入的。 variables和breakpoints，我们先将他们引入。</p>
                <figure class="highlight css">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@import</span> <span class="string">"variables"</span>;</span><br><span class="line"><span class="keyword">@import</span> <span class="string">"breakpoints"</span>;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>然后观察带有flex的代码，只发现了在utilities文件夹中有相关内容，跑不了了，那就是它，复制到同一路径，引入一下。</p>
                <figure class="highlight css">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@import</span> <span class="string">"flex"</span>;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>不过发现这个文件里的样式颇少，内容如下：</p>
                <figure class="highlight scss">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="comment">// Flex variation</span></span><br><span class="line"><span class="comment">//</span></span><br><span class="line"><span class="comment">// Custom styles for additional flex alignment options.</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">@if</span> <span class="variable">$enable-flex</span> &#123;</span><br><span class="line">  <span class="keyword">@each</span> <span class="variable">$breakpoint</span> in map-keys(<span class="variable">$grid-breakpoints</span>) &#123;</span><br><span class="line">    <span class="comment">// Flex column reordering</span></span><br><span class="line">    <span class="keyword">@include</span> media-breakpoint-up(<span class="variable">$breakpoint</span>) &#123;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-first &#123; <span class="attribute">order</span>: -<span class="number">1</span>; &#125;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-last &#123; <span class="attribute">order</span>: <span class="number">1</span>; &#125;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-unordered &#123; <span class="attribute">order</span>: <span class="number">0</span>; &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">// Alignment for every item</span></span><br><span class="line">    <span class="keyword">@include</span> media-breakpoint-up(<span class="variable">$breakpoint</span>) &#123;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">top</span> &#123; <span class="attribute">align-items</span>: flex-start; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-middle &#123; <span class="attribute">align-items</span>: center; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">bottom</span> &#123; <span class="attribute">align-items</span>: flex-end; &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">// Alignment per item</span></span><br><span class="line">    <span class="keyword">@include</span> media-breakpoint-up(<span class="variable">$breakpoint</span>) &#123;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">top</span>   &#123; <span class="attribute">align-self</span>: flex-start; &#125;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-middle &#123; <span class="attribute">align-self</span>: center; &#125;</span><br><span class="line">      <span class="selector-class">.flex-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">bottom</span> &#123; <span class="attribute">align-self</span>: flex-end; &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">// Horizontal alignment of item</span></span><br><span class="line">    <span class="keyword">@include</span> media-breakpoint-up(<span class="variable">$breakpoint</span>) &#123;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">left</span> &#123; <span class="attribute">justify-content</span>: flex-start; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-center &#123; <span class="attribute">justify-content</span>: center; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-<span class="attribute">right</span> &#123; <span class="attribute">justify-content</span>: flex-end; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-around &#123; <span class="attribute">justify-content</span>: space-around; &#125;</span><br><span class="line">      <span class="selector-class">.flex-items-</span>#&#123;<span class="variable">$breakpoint</span>&#125;-between &#123; <span class="attribute">justify-content</span>: space-between; &#125;</span><br><span class="line">    &#125;</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>这才多点啊？看官方实例明明用到了row，col这些样式好不好。再看看。 于是乎发现这些实际上也是依赖于原始的grid样式的。我们必须也要把它引入进来。 找找，发现了三个相关文件，拷贝过来，引入。</p>
                <figure class="highlight css">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">@import</span> <span class="string">"mixins/grid"</span>;</span><br><span class="line"><span class="keyword">@import</span> <span class="string">"mixins/grid-framework"</span>;</span><br><span class="line"><span class="keyword">@import</span> <span class="string">"grid"</span>;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>嗯，这下应该全了。 结构如下所示 <a href="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-1@2x.png" target="_blank" rel="noopener"><img src="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-1@2x.png" alt="QQ20161029-1@2x"></a></p>
                <h2 id="编译代码"><a href="#编译代码" class="headerlink" title="编译代码"></a>编译代码</h2>
                <p>官方用的是grunt自动化工具，然而我用着并不习惯。在这里我们用到gulp来编译。 首先npm init 初始化一个 package.json 引入一些包</p>
                <figure class="highlight 1c">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="string">"devDependencies"</span>: &#123;</span><br><span class="line">  <span class="string">"babel-core"</span>: <span class="string">"^6.3.26"</span>,</span><br><span class="line">  <span class="string">"babel-preset-es2015"</span>: <span class="string">"^6.16.0"</span>,</span><br><span class="line">  <span class="string">"babel-register"</span>: <span class="string">"^6.18.0"</span>,</span><br><span class="line">  <span class="string">"del"</span>: <span class="string">"^2.2.2"</span>,</span><br><span class="line">  <span class="string">"gulp"</span>: <span class="string">"^3.9.1"</span>,</span><br><span class="line">  <span class="string">"gulp-autoprefixer"</span>: <span class="string">"^3.1.1"</span>,</span><br><span class="line">  <span class="string">"gulp-babel"</span>: <span class="string">"^6.1.2"</span>,</span><br><span class="line">  <span class="string">"gulp-plumber"</span>: <span class="string">"^1.1.0"</span>,</span><br><span class="line">  <span class="string">"gulp-postcss"</span>: <span class="string">"^6.2.0"</span>,</span><br><span class="line">  <span class="string">"gulp-sass"</span>: <span class="string">"^2.3.2"</span>,</span><br><span class="line">  <span class="string">"gulp-sourcemaps"</span>: <span class="string">"^2.2.0"</span>,</span><br><span class="line">  <span class="string">"postcss-scss"</span>: <span class="string">"^0.3.1"</span></span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>整体的结构如下</p>
                <figure class="highlight json">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line">&#123;</span><br><span class="line">  <span class="attr">"name"</span>: <span class="string">"bootstrap-flex"</span>,</span><br><span class="line">  <span class="attr">"version"</span>: <span class="string">"1.0.0"</span>,</span><br><span class="line">  <span class="attr">"description"</span>: <span class="string">"BootStrap Flex"</span>,</span><br><span class="line">  <span class="attr">"main"</span>: <span class="string">"gulpfile.babel.js"</span>,</span><br><span class="line">  <span class="attr">"scripts"</span>: &#123;</span><br><span class="line">    <span class="attr">"test"</span>: <span class="string">"echo \"Error: no test specified\" &amp;&amp; exit 1"</span></span><br><span class="line">  &#125;,</span><br><span class="line">  <span class="attr">"author"</span>: <span class="string">"Germey"</span>,</span><br><span class="line">  <span class="attr">"license"</span>: <span class="string">"MIT"</span>,</span><br><span class="line">  <span class="attr">"devDependencies"</span>: &#123;</span><br><span class="line">    <span class="attr">"babel-core"</span>: <span class="string">"^6.3.26"</span>,</span><br><span class="line">    <span class="attr">"babel-preset-es2015"</span>: <span class="string">"^6.16.0"</span>,</span><br><span class="line">    <span class="attr">"babel-register"</span>: <span class="string">"^6.18.0"</span>,</span><br><span class="line">    <span class="attr">"del"</span>: <span class="string">"^2.2.2"</span>,</span><br><span class="line">    <span class="attr">"gulp"</span>: <span class="string">"^3.9.1"</span>,</span><br><span class="line">    <span class="attr">"gulp-autoprefixer"</span>: <span class="string">"^3.1.1"</span>,</span><br><span class="line">    <span class="attr">"gulp-babel"</span>: <span class="string">"^6.1.2"</span>,</span><br><span class="line">    <span class="attr">"gulp-plumber"</span>: <span class="string">"^1.1.0"</span>,</span><br><span class="line">    <span class="attr">"gulp-postcss"</span>: <span class="string">"^6.2.0"</span>,</span><br><span class="line">    <span class="attr">"gulp-sass"</span>: <span class="string">"^2.3.2"</span>,</span><br><span class="line">    <span class="attr">"gulp-sourcemaps"</span>: <span class="string">"^2.2.0"</span>,</span><br><span class="line">    <span class="attr">"postcss-scss"</span>: <span class="string">"^0.3.1"</span></span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>执行</p>
                <figure class="highlight cmake">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line">npm <span class="keyword">install</span></span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>安装一下 node_modules。 然后生成一个.babelrc文件，因为我们要用es2015的语法，内容。</p>
                <figure class="highlight json">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line">&#123;</span><br><span class="line">  <span class="attr">"presets"</span>: [</span><br><span class="line">    <span class="string">"es2015"</span></span><br><span class="line">  ]</span><br><span class="line">&#125;</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>然后写一下 gulpfile.babel.js</p>
                <figure class="highlight coffeescript">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="keyword">import</span> gulp       <span class="keyword">from</span> <span class="string">'gulp'</span>;</span><br><span class="line"><span class="keyword">import</span> plumber <span class="keyword">from</span> <span class="string">'gulp-plumber'</span>;</span><br><span class="line"><span class="keyword">import</span> sass <span class="keyword">from</span> <span class="string">'gulp-sass'</span>;</span><br><span class="line"><span class="keyword">import</span> sourcemaps <span class="keyword">from</span> <span class="string">'gulp-sourcemaps'</span>;</span><br><span class="line"><span class="keyword">import</span> del <span class="keyword">from</span> <span class="string">'del'</span>;</span><br><span class="line"><span class="keyword">import</span> autoprefixer <span class="keyword">from</span> <span class="string">'gulp-autoprefixer'</span>;</span><br><span class="line">const source = [<span class="string">'sass/**/*.scss'</span>];</span><br><span class="line">const dest = <span class="string">'dist/css/'</span>;</span><br><span class="line"></span><br><span class="line">gulp.task(<span class="string">'sass'</span>, <span class="function"><span class="params">()</span> =&gt;</span> &#123;</span><br><span class="line">    <span class="keyword">return</span> gulp.src(source)</span><br><span class="line">    .pipe(plumber())</span><br><span class="line">    .pipe(sourcemaps.init())</span><br><span class="line">    .pipe(sass(&#123;outputStyle: <span class="string">'compressed'</span>&#125;).<span class="literal">on</span>(<span class="string">'error'</span>, sass.logError))</span><br><span class="line">    .pipe(sourcemaps.write())</span><br><span class="line">    .pipe(autoprefixer(&#123;</span><br><span class="line">        browsers: [<span class="string">'last 2 versions'</span>],</span><br><span class="line">        cascade: <span class="literal">true</span>,</span><br><span class="line">        remove: <span class="literal">true</span></span><br><span class="line">    &#125;))</span><br><span class="line">    .pipe(gulp.dest(dest));</span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line">gulp.task(<span class="string">'clean'</span>, del.bind(<span class="literal">null</span>, [<span class="string">'dist'</span>]));</span><br><span class="line"></span><br><span class="line">gulp.task(<span class="string">'build'</span>, [<span class="string">'sass'</span>, <span class="string">'watch'</span>])</span><br><span class="line"></span><br><span class="line">gulp.task(<span class="string">'watch'</span>, <span class="function"><span class="params">()</span> =&gt;</span> &#123;</span><br><span class="line">    gulp.watch(source, [<span class="string">'sass'</span>]);</span><br><span class="line">&#125;);</span><br><span class="line"></span><br><span class="line">gulp.task(<span class="string">'default'</span>, [<span class="string">'clean'</span>], <span class="function"><span class="params">()</span> =&gt;</span> &#123;</span><br><span class="line">    gulp.start(<span class="string">'build'</span>);</span><br><span class="line">&#125;);</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>比较简单，用到的有sass, sourcemaps, autoprefixer这几个比较常用的包。 执行</p>
                <figure class="highlight ebnf">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line"><span class="attribute">gulp</span></span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>观察下结果。</p>
                <figure class="highlight angelscript">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre>
                      </td>
                      <td class="code">
                        <pre><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Requiring <span class="keyword">external</span> module babel-register</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Using gulpfile /<span class="keyword">private</span>/var/www/flex/gulpfile.babel.js</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Starting <span class="string">'clean'</span>...</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Finished <span class="string">'clean'</span> after <span class="number">8.12</span> ms</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Starting <span class="string">'default'</span>...</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Starting <span class="string">'sass'</span>...</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Starting <span class="string">'watch'</span>...</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Finished <span class="string">'watch'</span> after <span class="number">9.63</span> ms</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">38</span>] Finished <span class="string">'default'</span> after <span class="number">25</span> ms</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">39</span>] Finished <span class="string">'sass'</span> after <span class="number">312</span> ms</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">39</span>] Starting <span class="string">'build'</span>...</span><br><span class="line">[<span class="number">18</span>:<span class="number">46</span>:<span class="number">39</span>] Finished <span class="string">'build'</span> after <span class="number">2.41</span> μs</span><br></pre>
                      </td>
                    </tr>
                  </table>
                </figure>
                <p>恩，没什么问题。可以看到 dist 文件夹下生成了一个文件叫做 bootstrap-flex.css。</p>
                <h2 id="测试用例"><a href="#测试用例" class="headerlink" title="测试用例"></a>测试用例</h2>
                <p>恩接下来我们来测试一下官方实例是否正常。 新建一个index.html内容如下</p>
                <figure class="highlight applescript">
                  <table>
                    <tr>
                      <td class="gutter">
                        <pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span 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class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span 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class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br></pre>
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                      <td class="code">
                        <pre><span class="line">&lt;!DOCTYPE html&gt;</span><br><span class="line">&lt;html lang=<span class="string">"en"</span>&gt;</span><br><span class="line">&lt;head&gt;</span><br><span class="line">    &lt;meta charset=<span class="string">"UTF-8"</span>&gt;</span><br><span class="line">    &lt;title&gt;Title&lt;/title&gt;</span><br><span class="line">    &lt;link rel=<span class="string">"stylesheet"</span> href=<span class="string">"dist/css/bootstrap-flex.css"</span>&gt;</span><br><span class="line">&lt;/head&gt;</span><br><span class="line">&lt;body&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">2</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">2</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line"></span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-6"</span>&gt;</span><br><span class="line">            <span class="number">2</span> <span class="keyword">of</span> <span class="number">3</span> (wider)</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">3</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-5"</span>&gt;</span><br><span class="line">            <span class="number">2</span> <span class="keyword">of</span> <span class="number">3</span> (wider)</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">3</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-6"</span>&gt;</span><br><span class="line">            <span class="number">2</span> <span class="keyword">of</span> <span class="number">3</span> (wider)</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">3</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">1</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-5"</span>&gt;</span><br><span class="line">            <span class="number">2</span> <span class="keyword">of</span> <span class="number">3</span> (wider)</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            <span class="number">3</span> <span class="keyword">of</span> <span class="number">3</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-top"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-middle"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-bottom"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> three columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-left"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-center"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-right"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-around"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row flex-items-xs-between"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs-4"</span>&gt;</span><br><span class="line">            One <span class="keyword">of</span> two columns</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"container"</span>&gt;</span><br><span class="line">    &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"row"</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs flex-xs-unordered"</span>&gt;</span><br><span class="line">            First, <span class="keyword">but</span> unordered</span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs flex-xs-last"</span>&gt;</span><br><span class="line">            Second, <span class="keyword">but</span> <span class="keyword">last</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">        &lt;<span class="keyword">div</span> <span class="built_in">class</span>=<span class="string">"col-xs flex-xs-first"</span>&gt;</span><br><span class="line">            Third, <span class="keyword">but</span> <span class="keyword">first</span></span><br><span class="line">        &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">    &lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;/<span class="keyword">div</span>&gt;</span><br><span class="line">&lt;style&gt;</span><br><span class="line">    .row &#123;</span><br><span class="line">        margin-top: <span class="number">1</span>rem;</span><br><span class="line">    &#125;</span><br><span class="line">    .row &gt; [<span class="built_in">class</span>^=<span class="string">"col-"</span>] &#123;</span><br><span class="line">        padding-top: <span class="number">.75</span>rem;</span><br><span class="line">        padding-bottom: <span class="number">.75</span>rem;</span><br><span class="line">        background-color: rgba(<span class="number">86</span>, <span class="number">61</span>, <span class="number">124</span>, <span class="number">0.15</span>);</span><br><span class="line">        border: <span class="number">1</span>px solid rgba(<span class="number">86</span>, <span class="number">61</span>, <span class="number">124</span>, <span class="number">0.2</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    .flex-items-xs-top, .flex-items-xs-<span class="keyword">middle</span>,.flex-items-xs-bottom &#123;</span><br><span class="line">        min-height: <span class="number">6</span>rem;</span><br><span class="line">        background-color: rgba(<span class="number">255</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0.1</span>);</span><br><span class="line">    &#125;</span><br><span class="line">&lt;/style&gt;</span><br><span class="line"></span><br><span class="line">&lt;/body&gt;</span><br><span class="line">&lt;/html&gt;</span><br></pre>
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                <p>我把官方实例拿过来测试一下。 结果如下所示 <a href="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-0.png" target="_blank" rel="noopener"><img src="http://qiniu.cuiqingcai.com/wp-content/uploads/2016/10/QQ20161029-0-1024x819.png" alt="QQ20161029-0"></a> 恩，完美！ 至于这个布局的用法，那就去官方文档领悟吧，和之前的bootstrap栅格化布局有比较大的不同。 不过如果你看了实例之后，就会豁然开朗了。</p>
                <h2 id="代码"><a href="#代码" class="headerlink" title="代码"></a>代码</h2>
                <p>本用例代码已上传到 GitHub。 <a href="https://github.com/Germey/BootStrapFlex" target="_blank" rel="noopener">代码实例</a> 有兴趣的小伙伴可以下载测试。</p>
                <h2 id="结语"><a href="#结语" class="headerlink" title="结语"></a>结语</h2>
                <p>本文讲解了利用抽取Bootstrap V4中的Flex布局方式以及用gulp重新编译Bootstrap的过程，希望对大家有帮助。</p>
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              return document.getElementById(url).querySelector('.leancloud-visitors-count');
            }

            function addCount(Counter)
            {
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              var title = visitors.dataset.flagTitle;
              Counter('get', '/classes/Counter?where=' + encodeURIComponent(JSON.stringify(
              {
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                results
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                {
                  var counter = results[0];
                  leancloudSelector(url).innerText = counter.time + 1;
                  Counter('put', '/classes/Counter/' + counter.objectId,
                  {
                    time:
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                      '__op': 'Increment',
                      'amount': 1
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                  });
                }
                else
                {
                  Counter('post', '/classes/Counter',
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                    url,
                    time: 1
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                  }).catch(error =>
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                    console.error('Failed to create', error);
                  });
                }
              }).catch(error =>
              {
                console.error('LeanCloud Counter Error', error);
              });
            }

            function showTime(Counter)
            {
              var visitors = document.querySelectorAll('.leancloud_visitors');
              var entries = [...visitors].map(element =>
              {
                return decodeURI(element.id);
              });
              Counter('get', '/classes/Counter?where=' + encodeURIComponent(JSON.stringify(
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                url:
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                results
              }) =>
              {
                for (let url of entries)
                {
                  let target = results.find(item => item.url === url);
                  leancloudSelector(url).innerText = target ? target.time : 0;
                }
              }).catch(error =>
              {
                console.error('LeanCloud Counter Error', error);
              });
            }
            let
            {
              app_id,
              app_key,
              server_url
            } = {
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              "app_id": "6X5dRQ0pnPWJgYy8SXOg0uID-gzGzoHsz",
              "app_key": "ziLDVEy73ne5HtFTiGstzHMS",
              "server_url": "https://6x5drq0p.lc-cn-n1-shared.com",
              "security": false
            };

            function fetchData(api_server)
            {
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                  headers:
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                    'X-LC-Id': app_id,
                    'X-LC-Key': app_key,
                    'Content-Type': 'application/json',
                  },
                  body: JSON.stringify(data)
                });
              };
              if (CONFIG.page.isPost)
              {
                if (CONFIG.hostname !== location.hostname) return;
                addCount(Counter);
              }
              else if (document.querySelectorAll('.post-title-link').length >= 1)
              {
                showTime(Counter);
              }
            }
            let api_server = app_id.slice(-9) !== '-MdYXbMMI' ? server_url : `https://${app_id.slice(0, 8).toLowerCase()}.api.lncldglobal.com`;
            if (api_server)
            {
              fetchData(api_server);
            }
            else
            {
              fetch('https://app-router.leancloud.cn/2/route?appId=' + app_id).then(response => response.json()).then((
              {
                api_server
              }) =>
              {
                fetchData('https://' + api_server);
              });
            }
          })();

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